Heating unit



July 15, 1930. I D. w. LENAHAN 1,770,527

HEATING UNIT Fil ed May 11, 1928 2 h ts-Sh t 1 July 15, 1930. 0. w. LENAHAN HEATING UNIT Filed May 11, 1928 2 hu sh t 2 ATl ORNEY l atentecl July 15, 1936 ice DANIEL W. LENAHAN, OF NEW YORK, N. Y.

HEATING UN IT Application filed May 11, 1928. Serial No. 277,086.

cation, is particularly adapted for store, shop,

garage, chicken house, greenhouse, or other single room use, to replace a stove, gas heater or the like.

The invention has for its object first, to provide a unithaving ample heating capac ity; second one which will operate etiiciently at comparatively low cost, in fuel consumption; and, third, an arrangement such as will occupy a minimum amount of floor space.

In addition to the foregoing, the invention is designed to be constructed largely, if not entirely, from standard stock parts, requiring no special castings or fittings and is adapted to be as readily, easily and quickly installed as an ordinary coal stove.

A construction suitable for carrying my invention into effect is illustrated in the accompanying drawings, but I do not wish to be understood as limiting myself to either the form or details shown, as various changes may be made therein without departing from the spirit and scope of the invention.

In the drawings Fig. l is a view in side elevation, with portions broken away to more clearly show the construction Fig. 2 is a top plan view and partial section on the line 22, of Fig. 1; and

Fig. 3 illustrates a slightly modified construction.

Referring to the drawings, I have shown as the preferred embodiment of the invention, a wall type of heater, which employs a flat coil '1 of a suitable number of turns, depending upon the size of the room in which the heater is used.

The coil is provided at 2 with a valved water inlet, and at 3, 3, etc., with requisite air vents or valves.

The coil may be bracketed or strapped to g the side or end wall of a room, as indicated at. 4, 4, or otherwise secured in position, and

has its ends connected by a chambered memher here shown in the form of a pipe 5, provided with-a steam gage 6, to indicate the pressure generated in the'coil. As shown, the pipe, or member 5 is of greater diameter and considerably heavier than the piping of the coil.

In connecting the ends, the coil is made continuous, providing an unobstructed passage through the same for steam and a condensation return tothe lower part thereof. Leadlng outward from the lower end of the pipe 5 and forming, 1n effect, a continuation or. extension ofithe lower end of the coil, there is an approximately J-shaped connection 7, which terminates ina dead endthat is to say, a closed end 8. 1 g

I have found that by applying and limiting the applicationofheat to this dead-end connection and the pipe 5,'the required steam pressure can be rapidly generated andm'aintained in the coil, at a considerable saving in the consumption of fuel, over what would be used in heatin the coil throiwhout its entire length.

. important itemto the user of any heating system,I am enabled to efiect such a saving'in cost by heating the above ment oned com- H par'ati-vely small portion of the coil;

As shown, a gas or other suitable flame, in-

' dicated by the burner 9, is provided to play directly on the'J-shaped connection 7' of the coil, and, in order to avoid unnecessary waste of heat,the burner and J-shaped coil connec tion together witha portion of the pipe 5, are

enclosed in a casing or fire box 10.

The fire-boxlO is constructed of sheet iron or steel, lined with asbestos, and is provided with a suitable door 11, giving access to the interior, andalso with a fine 12, for the escape of burnt gases to a chimney or other outlet.

A supply of fresh air for the burner, is admitted to the firebox through a series of small openings 13.. Extendingtransversely of the fire box, there is a vertically disposed baffle plate 14,which prevents the immediate escape of the hot gases to the flue and tends to direct them downwardly for further heating the dead-end connection. V

The modification shown in Fig. 3 differs in one respectonly from the form shown in Figs. l and2. The difference referred to consists in having the flue 12,-from the fire-box, so

arranged as to surround or include the entire length of the pipe 5. Such an arrangement, as will be apparent, utilizes the escaping products of combustion, while in a highly heated state, to supplement the action of the burner flame in generating steam for the heati coil. I

In t e operation of the unit, Water, to a suitable depth, is admitted to the lower part. of the coil through the valved inlet 2. The

valve 15, controlling the supply of gas or other fuel to the burner, is opened and a light applied throu h the fire-box door.

he flame p aying directly on the dead-end connection and indirectly heating the pipe 5 and any other portions of the coil included Within the fire box, raises the temperature of the contained water to the point required for rapid conversion into steam, which, under the pressure developed, passes by way of the pipe :5 to the coil, as indicated by the arrows in F Steam bubbles entering the highly heated pipe 5, are instantly converted into dr steam, a continuous supply of which is 'de ivered to the coil.

It will also be apparent that two or more coils and connections, as above described, may be employed in connection with a single burner and fire box and such coils arranged side by side, end to end or otherwise, as desired.

for the dead-end connection, and an enclosing As the main advantages of the invention will be evident from the foregoing description they will not be further described.

av' thus described my invention, what I claim 15:

1. A self-contained steam heating unit comprising a steam coil having its ends connected to provide a continuous passage through the same, a dead-end connection from the bottom of the coil, heating means casing for the connection and its heating means.

2. A self-contained steam heating unit comprising an endless steam coil, a dead end connection leading outward from the lower turn of the coil, a source of heat for the dead-end connection and a fire box enclosing the connection and the source of heat.

3. A self-contained steam heating unit comri a. steam coil having its ends connected a c ambered member, a dead-end connec tion from the lower end of the said member,

heating means for the dead-end connection and the chambered member, and a fire box enclosing the heating means.

4. A self-contained steam heating unit comprising a steam coil having its ends connected by a chambered member, a dead-end connection from the lower end of the said member, heating means for the dead-end connection and the chambered member, and a fire-box enclosing the connection, the chambered member and the heating means.

5. A self-contained steam heating unit comprising an endless steam coil, air-vents and a water inlet for the coil, the said coil including within its length a chambered member of greater diameter than the coil piptom turn of the coil and terminating in a closed end, heating means for the J-shaped connection and chambered member, and a nonheat conducting casing for the connection and its heating means, the said casing being provided with air inlets and an outlet flue for the casing.

7. A self-contained steam heating unit comprising a fiat coil, air valves and a water inlet for the coil, the said coil having its ends connected by a vertically disposed chambered member, a dead-end connection from the said member forming a continuation of the coil and extending outward beyond the member, heating means for the dead-end connection and the chambered member, a casing enclosing the heating means and parts heated by said means, and a'bafiled outlet fluefor the casing.

I afiix my signature.

' DANIEL W. LENAHAN. 

